. >> reporter: republicans, like rising star senator marco rubio, say raising taxes on the wealthy is the wrong approach. >> the tax increases he wants would fail to make even a small dent in the debt. it would hurt middle-class businesses and the people who work for them. >> reporter: so, that's the major holdup, taxes. republicans and democrats deeply divided. >> there's nothing going on privately that's not going on public. >> reporter: amidst the political posturing, there may actually be a chance for compromise on medicare. president obama says he's open to raising the age when seniors can start receiving benefits, from 65 to 67. according to one study, that would save almost $6 billion a year. president obama travels, today, to the business roundtable, where he'll address ceos of leading companies, folks who are closely watching this fiscal cliff drama. paula? rob? >> drama, indeed. tahman bradley, live in washington. thanks, tahman. >>> and a top republican may be among president obama's choice for his reshuffled cabinet. former senator chuck hagel of nebraska is said to be on